Question

A 4000 J of energy is used to take a mass of 50 kg up the ground.The height attained by the body is?​

Answer 1

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Since, the object is raised to certain height, the work done is equal to the potential energy stored in the body.

So, W = PE = mgh where m is the mass, g is the acceleration due to gravity and h is the height upto which the object is raised.

Here, 4900 = 50 × 9.8 × h ( g = 9.8m/s²)

50x9.8xh = 4900

h = 4900/490

h = 10 m

Therefore, the object is raised to a height of 10m.

Answer 2

Answer:

the answer is h=8.16m..